ACKNOWLEDGMENTS The History of Grinding

Our colleagues—some of whom we have known for many years and some we have come to know recently through e-mail—have responded most generously to our requests for information and comments. We are grateful for all the assistance we received. We would like to extend our particular thanks to those colleagues who wrote or contributed to sec­tions in the book. In particular, we acknowledge the contributions of Doug Schlepp and Bud Green from Krebs Engineers (Tucson, Arizona), who wrote most of the section on hydrocyclones. Thanks also to Klaus Schonert from the Technical University of Clausthal, Germany, for the description of the work that led to the development of high-pressure grinding rolls. Philip Lloyd, a consultant in South Africa, gave us the history of the devel­opment of the planetary mill at the Chamber of Mines in South Africa. The Dorr Oliver Company sent us information on J. V.N. Dorr; and Stuart Jones of Metso Minerals, Grind­ing Section, supplied the historical information on Harlow Hardinge.

A. J.L. wishes to thank the many colleagues with whom he discussed aspects of blast­ing, crushing, and grinding in Wordsmith’s coffee shop at the University of Queensland and Gossip’s coffee shop at Toowong village, in addition to Vynette Halliday for her assistance with diagrams.

With the figures included in the book, we have acknowledged the permissions we received to publish figures that we extracted from published information. Where we were

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unable to contact the original publisher to obtain permission to publish, when possible we acknowledge the source for the figure.

We are indebted to our editor, Rend Howard. She was a tremendous help in helping us organize the book, which started out as a series of disconnected technical reports. It was Rene’s guidance, encouragement, and patience that made the completion of this book a fruitful experience.

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ACKNOWLEDGMENTS
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